Bus accident

BEN STANSALL / AFP/Getty Images

A police officer walks by a bus that crashed into a tree in south London on December 20, 2013. Two people were believed to be in critical condition after a bus crashed into a tree in south London leaving dozens injured, according to local reports.

A police officer walks by a bus that crashed into a tree in south London on December 20, 2013. Two people were believed to be in critical condition after a bus crashed into a tree in south London leaving dozens injured, according to local reports. (BEN STANSALL / AFP/Getty Images)

A police officer walks by a bus that crashed into a tree in south London on December 20, 2013. Two people were believed to be in critical condition after a bus crashed into a tree in south London leaving dozens injured, according to local reports.